package com.yr.inter;

import com.yr.context.jwtcontext;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
@Slf4j
public class jwtinter implements HandlerInterceptor {

    @Autowired
    private JwtProperties jwtProperties;

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //直接放行
            return true;
        }

        //获取令牌
        String token = request.getHeader(jwtProperties.getUserTokenName());

        //校验jwt令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), token);
            Long userId = Long.valueOf(claims.get("userId").toString());
            log.info("当前用户id：{}", userId);
            jwtcontext.setCurrentId(userId);
            //放行
            return true;
        } catch (Exception ex) {
            //返回状态码401
            response.setStatus(401);
            return false;
        }
    }
}
